Fuel pump gone bad - Ford Powerstroke Diesel Forum
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Old 12-11-2007, 06:12 PM
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Exclamation Fuel pump gone bad

I have a 2000 f-350 7.3 psd 4wd crew cab. My fuel pump went out so I replaced it. The new pump lasted about 2 weeks. So I thought it was a bad pump so ford gave me a new pump. It lasted 2 trips about 6 miles. So now I've droped the fuel tank and it was clean and all the lines are clean to the fuel bowl. What could be my problem. Oh the truck has a chip could it have gone bad and killed my fuel pumps? Thank you
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Old 12-11-2007, 06:37 PM
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Oh by the way I was towed by my buddys chevy. I've heard enough from him. Thanks for any help.
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Old 12-11-2007, 10:43 PM
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With the fuel pump disconnected, find out what voltage is at the contacts. Then with a new pump connected, turn the key on and read the voltage at the pump under load. You have 20 second intervals after the key on until pump turns off. I am only guessing that a low voltage condition could burn a pump out. I have seen it before.

A chip has nothing to do with the fuel pump.

I hope someone else will chime in here that knows more than I do.....
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Old 12-14-2007, 03:02 PM
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Once you get a pump working, check the fuel pressure at the fuel bowl. I have seen a regulator get stuck and not let any fuel return to the tank, which backed up pressure into the pump. Just a thought.
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Old 12-14-2007, 08:55 PM
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I did forget to tell you we cracked that and had to replace it and the two hard fuel lines. So I went out and pulled it off. It might could be crooked or stuck but it seemed funny. Is it worth trying one more fuel pump on.
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Old 12-14-2007, 09:34 PM
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Send a message via AIM to lifewitlooie
u fixed it then?
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Old 12-14-2007, 10:02 PM
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No I got a new pump yet
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Old 12-14-2007, 10:08 PM
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fuel pumps gone bad

--------------------------------------------------------------------------------

I sent this to Lilredpowerstroke

Hey I was told by Builttuff that you had fuel pump problems. I read some of your posts but never came up with the problem.
So here's my problem. I lost power and made it about two miles, then the truck died. I towed it off the freeway via Chevy. So we replaced the fuel pump. The truck ran fine, but when trying to fix the problem we broke the connection to the fuel bowl. so I replaced the two hard fuel linesand the pressure relief valve that connects directly to the fuel bowl. I think its the pressure relief valve. I belive that fuel pump lasted 7-10 days 500 miles maybee. It started to go out the truck would'nt start, so i added fuel to the bowl it was empty the truck finally started just enough to get me home didnt start the next day. I thought itwas a bad fuel pump out of the box. So Ford replaced it for free. Put it in and it lasted 2 trips about 6 miles. I took it back and they gave me some crap but gave me another one. so I droped the tank blew out the lines 3rd fuel pump died 2 trips 5-6 miles. I don't want to kill a forth pump if iI dont have to. I pulled off the pressure relif vave and the spring could have bee crooked but i'm not sure. So any response would be very helpful.
Thank you Colby

2000 Ford f-350 7.3 psd 4wd
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Old 12-15-2007, 01:39 PM
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Whats a good online store for fuel pumps ect.
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